Low-temperature photoluminescence imaging and time-resolved spectroscopy of single CdS nanowires

被引：33

作者：

Titova, L. V. ^{[1
]}

Hoang, Thang Ba

Jackson, H. E.

Smith, L. M.

机构：

[1] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA

[2] Miami Univ, Dept Phys, Oxford, OH 45056 USA

[3] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2266414

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Time-resolved photoluminescence (PL) and micro-PL imaging were used to study single CdS nanowires at 10 K. The low-temperature PL of all CdS nanowires exhibits spectral features near energies associated with free and bound exciton transitions, with the transition energies and emission intensities varying along the length of the nanowire. In addition, several nanowires show spatially localized PL at lower energies which are associated with morphological irregularities in the nanowires. Time-resolved PL measurements indicate that exciton recombination in all CdS nanowires is dominated by nonradiative recombination at the surface of the nanowires.

引用

页数：3

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